JP2007061933A - Opening/closing door of machine tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an opening/closing door of a machine tool, which can prevent the failure of operation thereof caused by chips, by removing the chips by using fluid flowing from a pipe. <P>SOLUTION: The opening/closing door 1 has a rotating shaft formed of the pipe 3 which has openings 4 such as holes bored therein. Then the pipe 3 is fed with a coolant from a coolant feeding section. The coolant overflows the openings 4 to flow on a surface of the pipe 3, to thereby wash out chips adhering to the pipe or chips which are about to adhere to the same. In this manner an inconvenience of infiltration of chips onto a sliding surface between a guide 2 of the opening/closing door 1 and the pipe 3 of the rotating shaft to cause the failure of rotational operation of the opening/closing door 1 can be eliminated. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an opening / closing door provided to enclose a cutting area of a machine tool.

  In machine tools, the purpose is to prevent the scattering of chips produced by cutting, and furthermore, when coolant is used to cool the tool and eliminate chips, this prevents the coolant from scattering and becomes a mist. For the purpose of preventing discharge to the outside, the cutting area is surrounded by a body cover, and an opening / closing door is provided at a part thereof to allow access to the machining area.

  In machine tools that use coolant, scattered cutting oil or mist-like cutting oil adheres to the inner wall and the door of the cutting area, and this cutting oil accumulates in the groove of the door and leaks outside. In order to prevent this coolant (cutting oil) from leaking, the cutting oil accumulated in the groove of the open / close door by the negative pressure generated by the rotation is used as a cutting area in order to prevent leakage of this coolant (cutting oil). There is known an invention in which the cutting oil is forcibly returned to prevent the cutting oil from leaking to the outside (see Patent Document 1).

Japanese Utility Model Publication No. 5-56347

During the cutting process, the open / close door is closed to block the machining area from the outside, and prevent chips and coolant from splashing. Chips generated by cutting the workpiece are scattered in the processing area. However, when the chips adhere to and accumulate on the sliding and rotating parts of the door, the opening and closing operation of the door is hindered.
The chips need to be cleaned and removed, but the chips are generated in the internal processing area closed by the doors. Accumulation in the moving part or rotating part may make it difficult to slide and rotate. Even if cleaning is performed, the cleaning operation is not easy because it is inside the processing region.
Therefore, the present invention aims to solve the above-described problems.

  In a machine tool opening / closing door, a sliding portion of the opening / closing door that is slid to open / close or a rotation central axis of the opening / closing door that is rotated to open / close is configured by a pipe, and a plurality of openings are provided in the pipe. The fluid was allowed to flow from the inside through the opening to the sliding portion of the outer periphery of the pipe. Furthermore, an opening for cleaning the inside of the machine is separately provided in the pipe, and the inside of the machine can be cleaned by a fluid introduced into the pipe and flowing out from the opening. In particular, the pipe is connected to a coolant supply device so that the fluid flows out from the opening.

  Since the chips are removed by the fluid flowing out from the pipe, the chips do not accumulate on the sliding surface and the rotating portion of the opening / closing door, and the opening / closing operation of the opening / closing door can be made smooth.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of an essential part of an opening / closing door according to a first embodiment of the present invention. Reference numeral 1 denotes an opening / closing door, and the opening / closing door 1 is pivotally supported by a pipe 3 by a plurality of guides 2 provided on one side. The open / close door 1 according to this embodiment is a door that opens and closes with a pipe 3 as a rotation center axis, and is configured to close / release a processing region. The pipe 3 is provided with a plurality of openings 4.

  FIG. 2 is an explanatory cross-sectional view of the vicinity of the opening / closing door portion of the machine cover 5 of the machine tool. The opening / closing door 1 is provided at the opening 6 of the machine cover 5, and a pipe 3 serving as a rotation center of the opening / closing door 1 is disposed at an end of the machine cover 5, and the pipe 3 is connected to the coolant supply device 7. The coolant fluid that is connected and supplied from the coolant supply device 7 flows out from the opening 4 of the pipe 3, flows on the surface of the pipe 3, and flows off the chips adhering to the surface of the pipe 3. Is prevented from adhering to the rotating portion of the door 1, that is, the sliding contact surface between the pipe 3 and the guide 2 of the door 1.

  FIG. 3 is a schematic view of the main part of the open / close door according to the second embodiment of the present invention. In the second embodiment, the open / close door 1 slides along the pipe 3 to open and close the processing region. The machine cover 5 of the machine tool is provided with a pipe 3 in the horizontal direction, and the pipe 3 is provided with a plurality of openings 4 facing upward. A pipe 3 is passed through a plurality of guides 2 provided on one side of the opening / closing door 1, and the opening / closing door 1 slides along the pipe 3 as shown by an arrow in FIG. It opens and closes. Also in the second embodiment, the pipe 3 is connected to the coolant supply device, and the coolant is supplied into the pipe 3, overflows from the opening 4, travels along the pipe surface, and the coolant flows to the surface of the flow pipe 3. The adhering chips are washed out and prevented from adhering, the sliding of the guide 2 of the open / close door 1 is smoothed, and the trouble due to the chips is eliminated.

  As in the first and second embodiments described above, the opening / closing door may be a rotary type or a sliding type. In the case of the sliding type, the shape of the opening / closing door 1 is used. Accordingly, it may be slid by a curved motion such as an arc.

  The present invention is characterized in that a sliding part that guides the open / close door 1 and a coolant such as cutting oil flows on the sliding contact surface of the rotating part so as to cover the sliding part. The rotating part is constituted by a pipe 3, coolant is supplied into the pipe 3 and is allowed to flow out from the opening 4, and in the case of a pipe forming a sliding part, the cross-sectional shape is a round shape However, the shape is not limited to a round shape.

FIG. 4 is a diagram showing an example of an opening / closing door used in the present invention.
FIG. 4A shows a configuration of the opening / closing door 1 used in the embodiment shown in FIGS. 1 and 3. A plurality of tubular guides 2 are provided on one side of the opening / closing door 1, and a pipe 3 is connected to the guide 2. Is inserted, and the open / close door 1 is configured to rotate around the pipe 3 or to move along the pipe 3.
In FIG. 4B, a plurality of guides 2 are arranged on two opposite sides of the opening / closing door 1, and pipes 3 are inserted into the guides 2 arranged on each side, and the guides 2 along the two pipes 3. And the door 1 is opened and closed. And the pipe 3 has the opening part 4, The coolant supplied in the pipe 3 from the coolant supply apparatus is made to flow out from the opening part 4, and chips are poured off from the pipe surface.
FIG. 4C shows a guide 2 ′ having a semicircular shape instead of a tubular shape, and the other configuration is the same as FIG. 4A.
FIG. 4 (d) is a guide in which the guides 2a and 2b having a semicircular shape are combined to form a tubular guide 2. Other configurations are the same as those in FIG. 4 (a).

  FIG. 5 is a perspective view of the pipe 3 constituting the rotation center axis or sliding portion of the open / close door. The pipe 3 has a plurality of openings 4 and has a round hole as shown in FIG. However, as shown in FIG. 5B, a long hole may be used, and the shape and number of the holes are not limited. The openings 4 are arranged on an axis parallel to the central axis of the pipe 3, and when the central axis of the pipe is arranged in the horizontal direction as in the embodiment shown in FIG. It arrange | positions so that the hole of the opening part 4 may face upwards. Further, as shown in FIG. 1, when the central axis of the pipe 3 is arranged in the vertical direction, the holes of the opening 4 do not necessarily have to be on the same linear axis. Moreover, although the material of the pipe 3 is not limited, it is desirable that the pipe 3 is made of metal in consideration of resistance to various kinds of coolant since the coolant is passed through the inside.

  Further, as shown in FIG. 6, the inside of the machine can be cleaned without adding new piping by adding an opening 4 to the pipe 3 or changing the direction of the hole of the pipe 3. It becomes possible.

  In each of the above-described embodiments, the example in which the coolant is supplied to the pipe 3 from the coolant supply device has been described. However, it is not always necessary to use the coolant, and instead of the coolant, a gas such as other liquid or air. But that's fine. In particular, in the case of a machine tool that does not use coolant, a gas such as air is supplied to the pipe 3, and the gas is ejected from the opening 4, thereby cutting chips from the rotating part and sliding part of the opening / closing door. It may be excluded. However, a liquid such as a coolant is more effective than a gas in that the chips are excreted by the liquid flow and the chips are easily collected.

It is a principal part perspective view of the opening / closing door of the 1st Embodiment of this invention. It is sectional explanatory drawing of the opening-and-closing door part vicinity of the machine cover of the machine tool in the embodiment. It is a principal part schematic diagram of the opening / closing door of the 2nd Embodiment of this invention. It is a figure which shows the example of a form of the opening / closing door used for this invention. It is a perspective view of the pipe which comprises the rotation center axis | shaft or sliding part of the opening / closing door of this invention. It is a perspective view of another form of the pipe.

Explanation of symbols

1 Opening / Closing Door 2 Guide 3 Pipe 4 Opening 5 Machine Cover 6 Door Opening 7 Coolant Supply Device

Claims (4)

An opening / closing door of a machine tool that is opened and closed by sliding along a sliding portion,
The sliding part is constituted by a pipe, the pipe is provided with an opening, and the fluid flows from the inside of the pipe through the opening to the sliding part of the outer peripheral part of the pipe. Opening and closing doors for machine tools. An opening / closing door of a machine tool that rotates around a rotation axis to open and close,
A machine tool characterized in that the rotating shaft is constituted by a pipe, the pipe is provided with an opening, and the fluid flows from the inside of the pipe through the opening to the outer periphery of the pipe. Open and close door.   The pipe according to claim 1 or 2, wherein an opening for cleaning the inside of the machine is separately provided in the pipe, and the inside of the machine can be cleaned by a fluid introduced into the pipe and flowing out of the opening. Open / close door for machine tools. The machine door according to any one of claims 1 to 3, wherein the pipe is connected to a coolant supply device, and the fluid is a coolant.

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